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Onchopristis numidus (1) - rostral tooth



Origin : Morocco (Khouribga)

Geological era : Late Cretaceous (Cenomanian)

Age : 95 million of years

Size : cm 3-3.8

cm 3-3.8, placoid scale (rostral tooth) of shark (ancestor of sawfish).

Good specimen almost intact, taking into account that those of good quality are very rare, because these placoid scales of the rostrum are hollow and are often found in hard sediments where they are almost always damaged during the extraction process. Also good quality of the glaze, the color and preservation.

Onchopristis numidus is an extinct large sawfish lived at the time of the dinosaurs. The Onchopristis had a long and resistant shaped snout blade coated on both sides with barbed teeth. This kind of shark elasmobranchia of family of races inhabited the dark depths of the warm shallow seas of the Cretaceous, about 100 million years ago. Like the current sawfish probably spent most of the day immersed in slumber in the silt. At night he used his beak to dig out buried prey, raking them from the sediment. In case of a threat the rostrum was also used as a weapon of defense.

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